# import sys
#
# str = sys.stdin.readline()
# print(str)
#
# num = input("请输入第一个数字")
# print(num)
#
#
# sys.stdout.write('hello')
# print('world');

# file = open('a.txt', 'r', buffering=1)
# print((file.read()))
# file.close()
#
# with open('a.txt', 'r',encoding='utf-8',buffering=1) as file2:
#     # print(file2.readline())
#     print(file2.readlines())

with open('a.txt', 'a',encoding='utf-8',buffering=1) as file3:
    file3.write('111hello')
